BMW E46 Fanatics Forum banner

fuel

  1. fuel pump wont stop "priming"

    ///M3 Forum
    2003 bmw m3 convertible has a intermittent problem,happens most of the time fuel pump will not stop running when the key is in the start position and/or on position happens most of the time when it warms up would that be the relay,fuel pump,pressure regulator? is it because the fuel pump wont...
  2. Fuel Pump....

    General E46 Forum
    Hi, can anyone help. I've purchased a new fuel pump by Bosch. I checked part numbers on real oem using the vin and ensured the specific numbers matched yet the new pump is significantly smaller as you can see in the first picture. The car is a 2002 330 ci. My question isn't so much what do I do...
  3. Fuel/MAF tuning understanding

    Driveline, Engine & DME Tuning
    Hello all! I am just getting started into learning about ECU tuning. I watched a really good series on Youtube (video at bottom of post) that talked about the general process of tuning. Someday in the far far future I would love to turbo my car (325i) so I am trying to apply what I learned in...
  4. e46 ran out of gas, now a few things have happened.

    General E46 Forum
    Good day! I hope everything finds you well, (brief history 2002 325ci) I've had the car for almost 2.5-3 years, got it at 122k miles, it is now at around 145k miles. When I got the car, I replaced spark plugs (no coils), did complete coolant system refresh, fluids(brake, tran, diff) and lots of...
  5. Diagnostic inquiry

    General E46 Forum
    I have a car BMW e46 318i 1995 ccm with engine n42 (143 hp) made 2004 / Jaunuary. When analyzing OBD data with Konnwei KW850 diagnostic computer, I checked the fuel mixture preparation. I need help with one piece of information. A diagnostic computer displays "datastream", where they are basic...
  6. 320D - Pre-supply fuel pump doesn't get power

    General E46 Forum
    Hi! I really need some help. I've got a 2005MY 320D, which, about a month ago wouldn't start. I towed it to my local BMW workshop to have the problem identified, and after a while they told me that the pre-supply fuel pump was faulty and needed replacing. Being young and a student, naturally I...
  7. Fix for Fuel Sending Unit when pump is still good

    General E46 Forum
    I recently diagnosed a Fuel Sending Unit error after driving around with my fuel gauge on empty for a while. Driver side unit checked out, but the passenger side unit on the fuel pump was reading as bad. Since the pump has been working fine, I didn't want to have to replace it just because of...
  8. 320td Won't Start

    General E46 Forum
    Hi All, So i drove my 2002 E46 320td home on an evening, come to start it the next morning and it will not start! It turns over, but will not fire! I borrowed a snap on scanner from a friend and received the following codes on initial read: -4AB2 Electric Auxiliary Heater -4B90 Rail Pressure...
  9. Rough Start, Running lean

    General E46 Forum
    Hey e46 fanatic, I posted the same problem a while back but due to moves and life changes never actual got to posting any updates: back story, while back my '00 BMW 323ci started running lean. Rough startups, intake backfire, boggy acceleration, codes P1188 and P1189 (with a few...
  10. Misfiring on Cylinders 1, 3, and 6(Help!!)

    General E46 Forum
    So I have replaced the oem headers with aftermarket catless headers. I’ve been driving with CEL on and I want to try and fix the misfiring problems. I’ve got 3 misfires on my engine. I only have the o2 sensors that go before the cats on and the ones after the cats are off. Recently I have...
  11. Fuel gauge will not drop - and yes I have searched!

    General E46 Forum
    Hey everyone, Been noticing the past few days that my fuel gauge doesn't actually show that I am using any fuel, even though I am driving in excess of 120km per day. It initially settled at just above 1/2 a tank, I filled up the tank completely and now it shows full all the time, even after...
  12. Delivery Job With 325I

    General E46 Forum
    So, What do you guys think? Its with Skip The Dishes, similar to GrubHub or DoorDash.... The pay is usually minimum of 15 per hour each shift so far with delivery fees and tips. Plus bonuses the pay is decent... BUT.... I'm in an 05 325I, I get about 18-20 MPG in the city, thats not to bad...
  13. Last Code Help

    General E46 Forum
    Hello fellow fanatics :D , I just want to get some insight on the last of my problems. So after getting rid of my CEL's related to vacuum leaks, I am left with two more. I am currently pulling a P0441 (Incorrect purge flow) and a misfire with low fuel cut off. So I have researched the P0441...
  14. Has anyone tried the AEM fuel pumps?

    General E46 Forum
    So I'm guessing my fuel pump is saying goodbye as I'm having trouble turning the car on. I searched the forums and siemens/VDO pumps were recommended, but has anyone tried AEM? I'm currently looking at this one...
  15. 02 325i sputters and die first crank; Always starts on second start.

    General E46 Forum
    Hey guys My e46 is currently experiencing this problem just recently whereas upon cold starting the car - car been sitting for a while - it always initially turns over to about 600rpm instead of the usual 1000rpm before promptly dying. Upon second turn over it always starts and idles perfectly...
  16. Fuel problems urge

    General E46 Forum
    G'day I'm new here but I have a problem with my 2001 e46 325ci manual I recently have been having hard starts in my e46 so I change my fuel pump and it didn't want to start. Just cranked and then flooded cylinder 6. I changed injector 6 as it was leaking (I cranked the car without spark plugs...
  17. Fuel leak under car, possibilities?

    General E46 Forum
    Hey guys. 2003 330xi here. 120k miles. I replaced the fuel FILTER about a year ago, no problems. For the past month or so, when I turn the car on in the morning, I can smell gas. Inside, outside, and around the car. Seems the level of fuel (full/empty tank) does not matter. I changed my Fuel...
  18. e46 Fuel Inj

    General E46 Forum
    Hey guys, today I was taking off the fuel rail and think I may have broke an injector in the POS of cyl 6... Do I need to re code injectors if I just replace them all? Can I use 42lb EV1 injectors to replace them? Thank you!
  19. 2003 318i Misfire code

    General E46 Forum
    Hi, Last week my '03 318i started to hesitate while accelerating, but after the RPM's got higher, it would go like normal. This behavior continued until eventually the hesitating was constant and the engine light came on and started flashing, so I parked the car to prevent getting stranded or...
  20. 325ci strange crank/no start

    General E46 Forum
    Okay! I drive a 2004 325ci with just over 160k on it. Great car, I love it. Yesterday, I drive the car to the auto store and it starts and drives fine, as usual. After being inside for a couple minutes, I come back out and my car will NOT start. It cranks forever, the battery is tested and good...
Top